Valve-gear for explosive-engines.



C. S. ROSS.,. VALVE GEAR FOR EXPLOSIVE ENGINES.

APPLICATION FILED JAN. 4. 1915.

- mg, Patehted Nov. 23. 1915.

2 SHEETS-SHEET I- C. S. ROSS. VALVE GEAR FOR EXPLOSIVE ENGINEb. APPLICATION FILED JAN. 4, I915. L1HL3%3, Patented Nov. 23, 1915.

2 SHEETS-SHEET 2.

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wanna MI .K 5% M? III ea ns CHARLEQ S. ROS S, OE HIGHLAND PARK, MICHIGAN, .NSSfGNUR TO CHARLES 1). BROWN, TRUSTEE, 015 DETROIT, MICHIGAN.

VMVE-GEEAE; EOE EXPLOSIVE-ENGINES.

specification of Letters Patent.

Patented Nov. 23, 1915.

Application filed January @1915. Serial it o. 318.

To all whom it may concern:

Be it known that 1, CHARLES S. Ross, a

citizen of the Dnited States of America, re-

siding at Highland Park, in the county of ported closure for each cylinder traverses both the inlet and outlet ports in such manner as to produce the requisite results with minimum leakage and with a positive noiseless action.

The invention also includes means for adjustment whereby the valves may be accurately timed in relation to the cylinder movement and that'of the mechanism of the enginewhile access is obtainable to the parts for inspection, replac'ement'and repair.

The invention consists in the matters hereinafter set forth and more particularly pointedout in the appended claims.

In the drawings, Figure 1 is a view taken in longitudinal section through the cylinder of an engine that is equipped with a valve gear that embodies the invention, partsbeing shown in'elevatio'n; Fig. 2 is a view in side elevation, partially broken away and in section, of a valve gear side of the engine; and Fig. 3 is a View in detail and in section showing the disposition of the valve casing and ports.

Referring to the drawings, cylinders 1 providedwith the usual spark plug openings 2,, and if preferred, water jackets 3 or other radiating surfaces, are suitably mounted on an engine base 4:.

A crank 'shaft5 journaled in the base, is operatively connected to pistons 6 in the cylinders by the usual crank shaft connections indicated at 7 the base being closed with a suitable crank case 8.

Each cylinder has a lateral inlet port 9 against the faces of the cylinder which are flattened to receive it and to form therewith guideways in which slide valve plates 15 or closures may reciprocate. A depending wall 17' of the manifold is also arranged to form a housingfor valve stems 18 each of whichis appropriately secured at its upper end as by a sleeve 19 to a valve plate.

A port or opening 20through each closure 15 may be brought into register with either of the ports 9 and 10 by appropriate reciprocation of the closure, leakage during such movement being prevented by packing strips 21 that'are seated in channels in the face of the cylinder adjacent theclosure and are yieldingly projected either by leaf or spiral springs (not shown) against the slide. These packing members are arranged above and below and between the ports, their disposition and number being indicated diagrammatically inthe drawing as they are distributed to suit varying conditions of service andsize of engine.

A. fulcrum shaft 22 is journaled parallel to the main shaft 5 in a lateral extension 23 of thebase t. i

A'rocking shaft 24 is likewise journaled in parallel relation to the shafts 22 and 5 in the extension 23 access being had for'inspection through a removable cover plate 26 of the extension. The fulcrum shaft 22- and the rock shaft 2t are appropriately geared to the engine shaft 5' so that the fulcrum shaft turns at one-half engine speed and the rock shaft rotates in synchronism with the main shaft. This gearing, as herein illustrated may conveniently take the form of a sprocket chain 27 driven from a main gear 28 on the main shaft and passing over a fulcrum shaft pinion 29 and a rock shaft pinion 30 of proper diameters.

A; rocking beam 31 is pivotally connected at its inner end to a companion valve stem 18 and is fulcrumed between its ends on a pitman rod '32 that travels on an eccentric 38 of the shaft 22, a cap 34- forming the usual eccentric ring connection for the pitman.

A longitudinally adjustable eccentric rod 35 is pivotally secured at its upper end to the outer end portion" of the rock beam 37 and is connected with a cap 36 forming an eccentric strap connection with an eccentric portion 37 of the shaft 24. Conveniently, a right and 'leftscrewthreaded turn buckle 38 may be provided for the longitudinal adjustment of the length of the eccentric rod.

A guide member 89 that is'mounted in the cylinder engine.

' cylinder. proper angular relation of the respective ecextension 23 is flattened to extend between the two side bars which form the rock beam 31 and thereby act asa guide for the latter.

Guiding means in the form of bushings-a1 are provided for the stem 18.

Inoperation, the eccentrics of each rock beam' operating mechanism are appropriatel-y set in relation to the corresponding eccentrics of other cylinders to obtain the necessary correlation of movement corresponding to piston movement of a multicrum pitman of each slide closure is likewise set in such relation to the eccentric of the corresponding eccentric arm that the movement of the slide valve port into open intake position is very rapid. The cut off movement is likewise accelerated while it is maintained in exhaust position.a suflicient time to permit the proper scavenging of a This movement is the result of centrics and of the respective lengths of 'the members constituting the lever movement which oscillates the closure One of the advantages of the construction is the isolation of the slide valve, except at the ports, from the heated wall and gases of the interior of the cylinder, the interposition of the water jacket permitting this.

Another feature is the accuracy of adj ustment which is obtainable by the readily accessible rods that may be lengthened or shortened to provide for minor variations between the position of the ports and the shaft centers, as well as in other parts.

A further advantage is the accessibility of all working parts of the device as a removal of the intake manifold and the casing'extension .cover lays bare the entire valve mechanism.

Obviously changes in the details of construction may be made without departing from the spirit of my invention and I do not care to limit myself to any particular form or arrangement of parts.

What I claim is 1. In an explosive engine, a cylinder having an inlet and an exhaust port, a manifold having an inlet passage and an exhaust assa e in communication with the iorts respectively and forming a valve guideway with the ported face of the cylinder, a slide plate between the manifold and cylinder having an opening adapted to register successively with the cylinder ports, a valve stem, a rock beam, pivoted at one end to the stem,- a fulcrum shaft, a fulcrum pitman thereon on which the rock beam is pivoted, an. eccentric shaft, an eccentric rod thereon to which the other end portion of the rock beam is pivotally secured, a piston for the cylinder, a crank shaft operatively connected thereto, means for driving the fulcrum and eccentric shafts in timed rela- The eccentric of the fultion to the engine cycle and at the different speeds, and a guard member in sliding engagement with the rock beam to maintain the parts in the same plane of oscillation.

In an explosive engine, cylinders each having an inlet and an exhaust port extending through a water jacketed wall of the cylinder, a base for the cylinders having a lateral extension below the ported faces of the cylinders, a manifold having an inlet. and an exhaust passage in communication respectively with the corresponding ports of the cylinder and forming a housing for the ported sides of the cylinders and slide valve guideways with the ported faces of the cylinders, a slide plate for each cylinder having a single port adapted to register sue cessively with the inlet and exhaust ports of the cylinder, packing members yieldingly projected from the ported faces of the cylinders against the companion closures and maintaining them in sliding engagement in the guideways and against the manifold stems depending from the slide plates within the housing formed by the manifold into the extension of the base, a fulcrum shaft journaled in the extension, fulcrum pitmen oscillated by the shaft, an eccentric shaft journaled in the extension, eccentric rods oscillated by the eccentric shaft, rock beams each fulcrumed on a fulcrum pitman and pivotally attached near the extremities to a valve stem and an eccentric rod, guide members in the extension each in sliding engagement with a guide 0 )ening in the rock beam, a removable cover or the extension, a main crank shaft in the cylinder base, pistons for the cylinders operated by the crank shaft, and mechanism for driving the ful' crum and eccentric shafts by the main shaft at different speeds and in timed relation to the piston movement.

3. In an explosive engine, a cylinder having an inlet and an exhaust port, a slide plate having a single port adapted to sucshaft, a main shaft, a piston driven by the main shaft, means for operating the eccentric and fulcrum shafts from the main shaft in timed relation to the piston movement, a pitman carried by the fulcrum shaft, a longitudinally extensible eccentric rod carried by the eccentric shaft, a rock beam fulcruined on the pitman and pivoted near its extremities to the stem and eccentric rod, a

guide member playing in the slot between the guide members of the rock beam and means for-operating the fulcrum and eccentric shafts from the'main shaft.

, A; In'an explosive engine, a'cylinder having I ah'inletand,ancirhaust port, a slide plate register respectivel with the corresponding having a single" port adapted to successively register-with the cylinder ports, a valve stcinl extending from the plate, a manifold,

havinganjiinlet and an exhaust opening in "ports of the'cylin er and-forming with the adjacent faceof the cylinder a guideway for the plate and a housin for the stem, 'a'main shaft, a piston driven ivy the main shaft, an eccentric shaft parallel to the main shaft, a fulcrum shaft parallel to the other shafts and in ,a' vertical plane between them, an

eccentric rod reciprocated by the eccentric shaft and extending upwardly therefrom, a rock beam 'pivotally connected near each points of attachment of the eccentric rod and fulcrum pitman to maintain the rock beam and articulated parts from lateral displacement.

5. In an explosive engine, a cylinder having an inlet and an exhaust port, a slide plate having a single port adapted to suc-l "cessively register with the cylinder ports, a

valve stem extending from the plate, a manifold having an inlet and arr-exhaust opening in register respectively 'with the corresponding ports of the cylinder and forming with the adjacent face of the cylinder a guideavay for the plate and a housing for the stem, a main shaft, a piston driven by the main shaft, an eccentric shaft parallel to the main shaft, a fulcrum shaft parallel to the other shafts and in a vertical plane between them, an eccentric rod reciprocated by the eccentric shaft and extending upwardly therefrom, a rock beam pivotally connected near each end to the valve stem and rock arm respectively, a pitman reciprocated by the fulcrum shaft'and pivoted to the rock beam between the points of attachment of the eccentric rod and stem, a guide member rigidly secured in relation to the cylinder in sliding engagement with the beam between the points of attachment of the eccentric rod and fulcrum pitman to maintain the rock beam and articulated parts from lateral displacement, and an extension on the engine housing the shafts and attached parts and forming a support for the guide member.

In testimony whereof I affix my signature in presence of two witnesses.

CHARLES S. HQSS,

Witnesses: I

C. R. S'rIoKNar'. A. M. Donn; 

